A novel rhodamine B-based "off-on" fluorescent sensor for selective recognition of copper (II) ions
A novel rhodamine B-based "off-on" fluorescent sensor for selective recognition of copper (II) ions
复制标题
一种新型基于罗丹明 B 的“关-开”荧光传感器，用于选择性识别铜 (II) 离子
DOI：
10.1016/j.talanta.2018.01.073
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发表时间：
2018-07-01
期刊：
影响因子：
6.1
通讯作者：
Peng, Xiaojun
中科院分区：
文献类型：
--
作者：
Jiao, Yang;Zhou, Lu;Peng, Xiaojun
以罗丹明B和3-甲基-2-苯并噻唑啉酮腙为原料，在乙腈水溶液中合成了一种新型的罗丹明基传感器RBH。作为一种“关-开”荧光传感器，RBH在570 nm处表现出紫外-维斯吸收增加，在580 nm处表现出132倍的显著荧光增强，并且在加入Cu 2+离子后颜色从无色变为紫色。RBH的荧光强度与Cu ~（2+）浓度呈线性关系，检测限低。此外，传感器RBH已成功地用于活细胞中的Cu 2+离子的荧光成像。该传感器具有识别生物体系中Cu ~（2+）离子的潜力。
A novel rhodamine based sensor RBH was developed and synthesized by rhodamine B with 3-methyl-2-benzothiazolinone hydrazone, which exhibited high selectivity and sensitivity for sensing Cu2+ ions in the presence of other important relevant metal ions in aqueous acetonitrile. As an "off-on" fluorescent sensor, RBH exhibited a UV vis absorption increase at 570 nm and a 132-fold significant fluorescence enhancement at 580 nm with a distinct color change from colorless to purple upon the addition of Cu2+ ions. The fluorescence intensity of RBH is linear with the Cu2+ ions concentration with low limit of detection. Furthermore, the sensor RBH has been successfully utilized for fluorescence imaging of Cu2+ ions in living cells. The sensor could potentially recognize Cu2+ ions in biological system.